Nujira energy primer[W]. Available: http: //www. nujira. com.
[2]
Staudinger J, Gilsdorf B, Newman D, et al. High efficiency CDMA RF power amplifier using dynamic envelope tracking technique[C]. Proceedings of the IEEE Microwave Theory and Techniques Society Digest, 2000: 873-876.
[3]
Hanington G, Chen P, Asbeck P M, et al. High- efficiency power amplifier using dynamic power- supply voltage for CDMA applications[J]. IEEE Transactions on Microwave Theory and Techniques, 1999, 47(8): 1471-1476.
[4]
Rodríguez M, Fernández Miaja P, Rodríguez A, et al. A multiple-input digitally controlled buck converter for envelope tracking applications in radiofrequency power amplifiers[J]. IEEE Transactions on Power Electronics, 2010, 25(2): 369-381.
[5]
Soto A, Oliver J A, Cobos J A, et al. Power supply for a radio transmitter with modulated supply voltage[C]. Proceedings of the IEEE Applied Power Electronics Conference, 2004: 392-398.
[6]
Yousefzadeh V, Alarcón E, Maksimović D. Three-level buck converter for envelope tracking applications[J]. IEEE Transactions on Power Electronics, 2006, 21(2): 549-552.
[7]
Høyerby M C W, Andersen M A E. Envelope tracking power supply with fully controlled 4th order output filter[C]. Proceedings of the IEEE Applied Power Electronics Conference, 2006: 993-1000.
[8]
Yundt G B. Series parallel connected composite amplifiers[D]. Master Thesis. Massachusetts Institute of Technology, 1983.
[9]
Van der Zee R A R, Van Tuijl A J M. A power- efficient audio amplifier combining switching and linear techniques[J]. IEEE Journal of Solid-State Circuits, 1999, 34(7): 985-991.
[10]
Stauth J T, Sanders S R. Optimum biasing for parallel hybrid switching-linear regulators[J]. IEEE Transactions on Power Electronics, 2007, 22(5): 1978-1985.
[11]
Ertl H, Kolar J W, Zach F C. Basic considerations and topologies of switched-mode assisted linear power amplifiers[J]. IEEE Transactions on Industrial Electronics, 1997, 44(1): 116-123.
[12]
Xiong X, Ruan X, Xi H, Ge J. Feed-forwarding the output voltage to improve efficiency for envelope- tracking power supply based on a switch-linear hybrid scheme[J]. IEEE Transactions on Power Electronics, 2011, 26(8): 2106-2111.
[13]
Erickson R W, Maksimović D. Fundamentals of power electronics[M]. Norwell, MA: Kluwer, 2000.